RRQR factorization is a matrix factorization method that decomposes a matrix \( A \) into the product of three matrices: \( A = Q R R^T \), where: - \( A \) is an \( m \times n \) matrix (the matrix to be factored), - \( Q \) is an \( m \times k \) orthogonal matrix (with columns that are orthonormal vectors, where \( k \leq \min(m, n)
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